[AK4646]
www.DataSheet4U.com
AK4646
Stereo CODEC with MIC/SPK-AMP
GENERAL DESCRIPTION The AK4646 features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4646 is available in a 32pin QFN, utilizing less board space than competitive offerings. FEATURES 1. Recording Function • Stereo Mic Input (Full-differential or Single-ended) • Stereo Line Input • MIC Amplifier (+32dB/+29dB/+26dB/+23dB/+20dB/+17dB/+10dB/0dB) • Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute) • ADC Performance: S/(N+D): 83dB, DR, S/N: 86dB (MIC-Amp=+20dB) S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB) • Wind-noise Reduction Filter • 5 Band Notch Filter • Stereo Separation Emphasis 2. Playback Function • Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz) • Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute) • Stereo Separation Emphasis • Stereo Line Output - Performance: S/(N+D): 88dB, S/N: 92dB • Mono Speaker-Amp - S/(N+D): 60dB@150mW, S/N: 90dB - BTL Output - Available for both Dynamic and Piezo Speaker - Output Power: 400mW@8Ω (SVDD=3.3V) • Analog Mixing: Mono Input 3. Power Management 4. Master Clock: (1) PLL Mode • Frequencies: 12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin) 1fs (LRCK pin) 32fs or 64fs (BICK pin) (2) External Clock Mode • Frequencies: 256fs, 512fs or 1024fs (MCKI pin) 5. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs
MS0557-E-02 -1-
2007/05
[AK4646]
www.DataSheet4U.com
6. Sampling Rate: • PLL Slave Mode (LRCK pin): 7.35kHz ∼ 48kHz • PLL Slave Mode (BICK pin): 7.35kHz ∼ 48kHz • PLL Slave Mode (MCKI pin): 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz • PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz • EXT Slave Mode: 7.35kHz ∼ 48kHz (256fs), 7.35kHz ∼ 26kHz (512fs), 7.35kHz ∼ 13kHz (1024fs) 7. μP I/F: 3-wire Serial 8. Master/Slave mode 9. Audio Interface Format: MSB First, 2’s compliment • ADC: 16bit MSB justified, I2S • DAC: 16bit MSB justified, 16bit LSB justified, 16-24bit I2S 10. Ta = −30 ∼ 85°C 11. Power Supply: • AVDD: 2.2 ∼ 3.6V (typ. 3.3V) • DVDD: 1.6 ∼ 3.6V (typ. 3.3V) • SVDD: 2.2 ∼ 4.0 V (typ. 3.3V) 12. Power supply Current: 19mA 13. Package: 32pin QFN (5mm x 5mm, 0.5mm pitch) 14. Pin/Register Compatible with AK4642EN/AK4643EN
■ Block Diagram
AVDD
PMMP
AVSS
VCOM
DVDD
DVSS
MPWR
MIC Power Supply
PMADL
CSN Control Register CCLK CDTIO
LIN1 Internal MIC
RIN1 MIC-Amp LIN2
PMADR
PMADL or PMADR
PDN A/D HPF
External MIC
RIN2
PMADCL or PMADCR or PMDAC
BICK HPF LRCK LPF Stereo Separation 5 Band EQ ALC SDTO Audio I/F SDTI
PMLO
LOUT Line Out ROUT
PMDAC
D/A
DATT DEM SMUTE MCKO PLL MCKI VCOC
PMSPK
PMPLL
SPP Speaker SPN
PMBP
SVDD
SVSS
MIN
Figure 1. Block Diagram
MS0557-E-02 -2-
2007/05
[AK4646]
www.DataSheet4U.com
■ Ordering Guide
AK4646EN AKD4646 −30 ∼ +85°C 32pin QFN (0.5mm pitch) Evaluation board for AK4646
■ Pin Layout
MCKO 18
SVDD
SVSS
24
23
22
21
20
NC ROUT LOUT MIN RIN2 / IN2− LIN2 / IN2+ LIN1 / IN1− RIN1 / IN1+
19
17
MCKI
SPN
SPP
NC
NC
25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8
16 15 14
DVSS DVDD BICK LRCK SDTO SDTI CDTIO CCLK
AK4646EN
Top View
13 12 11 10 9
AVDD
VCOC
PDN
NC
MS0557-E-02 -3-
MPWR
VCOM
AVSS
CSN
2007/05
[AK4646]
www.DataSheet4U.com
■ Comparison with AK4642/AK4643
1. Function Function AVDD DVDD Power Supply for SPK-Amp Output Voltage of MIC Power MIC-Amp HPF / LPF Notch filter ALC Recovery Operation Waiting Period Read of ALC Volume Output Volume AK4642 AK4643 2.6V ∼ 3.6V 2.6V ∼ 3.6V 2.6V ∼ 5.25V (HVDD) 0.75 x AVDD 0dB/+20dB/+26dB/+32dB 1 Step No 128/fs ∼ 1024/fs AK4646 2.2V ∼ 3.6V 1.6V ∼ 3.6V 2.2V ∼ 4.0V (SVDD) 0.8 x AVDD 0dB/+10dB/+17dB/+20dB/ +23dB/+26dB/+29dB/ +32dB HPF : 2 Step, LPF : 1 Step 5 Band 128/fs ∼ 16384/fs Yes +36dB ∼ -54dB, 0.375dB Step (Note 1) 0dB ∼ -18dB, 6dB Step No No No
[email protected] 1 Mono 2 Stereo 6.33Vpp@SVDD=3.8V 3-Wire(Read/Write) No No 12MHz, 13.5MHz, 24MHz, 27MHz impossible to use ALC and Volume
128/fs ∼ 16384/fs
No No +12dB ∼ -115dB, 0.5dB Step
Headphone-Amp Yes Bass Boost Yes Receiver-Amp No Yes SPK-Amp Output Power
[email protected] 1.2W@5V Analog Mixing 1 Mono 2 Stereo ADC Input Selector 2 Stereo 3 Stereo SPK-Amp Maximum Output 8.5Vpp@SVDD=5V Voltage for Piezo Speaker 3-Wire(Write only), I2C-Bus μP I/F Audio I/F Format DSP Mode No Yes EXT Master Mode No Yes Master Clock frequency for 11.2896MHz, 12MHz, 12.288MHz, 13.5MHz PLL Mode 24MHz, 27MHz Note 1. ALC and Volume circuits are shared by input and output. Therefore, it is function at same time for both recording and playback mode.
MS0557-E-02 -4-
2007/05
[AK4646]
www.DataSheet4U.com
PIN/FUNCTION
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name MPWR VCOM .